The world has lost an incredible thinker and doer. I have lost an amazing friend. A void exists where before it was filled with David's optimism, humour and joy.
U.N. Intergovernmental Panel on Climate Change
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Science Organizations Again Urge Congress to Take Climate Change Seriously
A letter signed by many major American groups pushes back against climate denial and calls for policy solutions to cut greenhouse gas emissions, expressing a consensus backed by the U.S. National Academies and UNIPCC.
